AD 75-01-04

75-01-04 BEECH: Amendment 39-2062. Applies to Models A23-19, 19A, M19A and B19 (Serial Numbers MB-1 through MB-520); Model B19 Sport 150 (Serial Numbers MB-521 through MB-616); Models 23, A23, A23A, B23 and C23 (Serial Numbers M-1 through M-1361); Model C23 Sundowner 180 (Serial Numbers M-1362 through M-1485); Models A23-24 and A24 (Serial Numbers MA-1 through MA-368); Model A24R (Serial Numbers MC-2 through MC-95); and Models A24R and B24R Sierra 200 (Serial Numbers MC-96 through MC-180) airplanes.

Compliance: Required as indicated, unless already accomplished.

A) To reduce the possibility of improper or unintentional movement of the fuel selector valve, within 50 hours' time in service after the effective date of this AD, replace the existing fuel selector valve guard with a P/N 169-920001-43 or P/N 169-920000-165 as applicable to the airplane.

B) To prevent binding and assure complete shutoff of the P/N 169-920000-61-127 or -131 selector valve in the "Off" position, within 50 hours' time in service after the effective date of this AD, and thereafter at each annual, progressive or 100-hour inspection interval as required by Federal Aviation Regulation 91.169, check this valve for binding and shutoff characteristics in accordance with Beechcraft Service Instruction No. 0364-289, Rev. III, or later FAA-approved revision. If the valve does not meet the criteria contained in this Service Instruction, prior to further flight, replace it with an improved selector valve, P/N 169-380086-1, in accordance with Beechcraft Service Instruction No. 0622-289 or later FAA-approved revision.

The above inspections are not applicable to the P/N 169-380086-1 selector valve and may be discontinued when it is installed.

C) Equivalent methods of compliance with this AD must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region, Kansas City, Missouri.

This amendment becomes effective January 7, 1975.